/Engine/Source/Editor/UnrealEd/Public/AssetThumbnail.h
Accesses the texture for an object. If a thumbnail was recently rendered this function simply returns the thumbnail. If it was not, it requests a new one be generated No assumptions should be made about whether or not it was rendered
The thumbnail for the asset or NULL if one could not be produced
[FSlateTexture2DRHIRef](API\Runtime\Engine\Slate\FSlateTexture2DRHIRef) * AccessTexture ( const [FAssetData](API\Runtime\CoreUObject\AssetRegistry\FAssetData) & AssetData, uint32 Width, uint32 Height )